Tag Archives: Genetic Algorithms

A Study Bolsters a Call to Use Long-Acting Contraceptives by PAM BELLUCK


By PAM BELLUCK

In a program offering sexually active teenagers in St. Louis free birth control, pregnancy and abortion rates were less than a quarter of those of such teenagers nationally,

Published: October 2, 2014 at 12:00AM

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Overseas Trade Alters a Lizard’s Stocks by DOUGLAS QUENQUA


By DOUGLAS QUENQUA

The rise of the global shipping trade has caused a fundamental shift in how species spread from one landmass to the next.

Published: September 30, 2014 at 12:00AM

Nature in the Balance, Gene Tests, Artificial Sweetners and Diabetes by THE NEW YORK TIMES


By THE NEW YORK TIMES

Letters to the editor and online comments.

Published: September 30, 2014 at 12:00AM

Visiting an Ailing Relative by EMILY ANTHES


By EMILY ANTHES

A sobering new book argues that wild chimps are being assaulted from all sides: hunted for meat, killed for raiding farmers’ fields, trafficked as exotic pets and threatened by diseases like Ebola.

Published: September 30, 2014 at 12:00AM

Generating a Molecule With Star Quality by DOUGLAS QUENQUA


By DOUGLAS QUENQUA

Scientists in England have generated a highly complex star-shaped molecule made of interlocking rings that could be used to produce materials that are light, flexible and resilient.

Published: September 30, 2014 at 12:00AM

Toolmaking May Have Risen Independently by DOUGLAS QUENQUA


By DOUGLAS QUENQUA

A technique which early humans used to make knives by flaking off bits of stone was long thought to have originated in Africa and spread from there, but a new study suggests it arose independently in Eurasia.

Published: September 30, 2014 at 12:00AM

Rating Pain Relief by C. CLAIBORNE RAY


By C. CLAIBORNE RAY

How is the effectiveness of pain relievers measured? Is there a list that quantifies them by strength?

Published: September 30, 2014 at 12:00AM